One albino youngster of Casey's at 1.5ft had been adopted about a month ago to go live on the east FL coast in a semi outdoor pond. Appears to have had trouble with breathing cooler air, sat on the bottom too much, still fed but wasn't vibrant at all, then alternatively, floated at the surface with head almost sticking out. We long troubleshoot until I remembered about the breathing. After the pond was covered with plastic film, the behavior started to vastly improve.
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Here, huddled up in the corner, afraid at first of the camera, tripod, and the change, in stark contrast to other smart and curious tank mates like mahseer and lemon fin barb, but warm up and start coming out closer to the front later: